RHEL dbus security update

"It was discovered that the Red Hat Security Advisory RHSA-2009:0008 did
not correctly fix the denial of service flaw in the system for sending
messages between applications. A local user could use this flaw to send a
message with a malformed signature to the bus, causing the bus (and,
consequently, any process using libdbus to receive messages) to abort.
(CVE-2009-1189)

Note: Users running any application providing services over the system
message bus are advised to test this update carefully before deploying it
in production environments."